The Paws-On Puzzle Square is a fun, interactive dog toy that will keep dogs amused for hours by stimulating their natural instincts. Dogs move the square sliders across or tug on the pull bar to reveal hidden treats inside. Material: Particle board Each Paws-On Puzzle Square measures 10" Caution: Do not allow pet to play with toy if it becomes damaged. Supervision is advised; remove toy when not in use.